Parabolic barrel



FIG. 1 is a top-front-left perspective view of a parabolic barrel showing my new design;

FIG. 2 is a bottom-rear-right perspective view thereof;

FIG. 3 is an enlarged front elevational view thereof;

FIG. 4 is an enlarged rear elevational view thereof;

FIG. 5 is a left-side elevational view thereof;

FIG. 6 is a right-side elevational view thereof;

FIG. 7 is a top plan view thereof;

FIG. 8 is a bottom plan view thereof; and,

FIG. 9 is a top-front-left perspective view thereof, wherein the parabolic pneumatic barrel is shown fitted to an exemplary launcher device and prepared for use.

The broken line showing the barrel mounting flange in FIGS. 1, 2, 4, 5, 6, 7, and 8; the assembly rivets in FIG. 1 through 9; the retention bolt in FIGS. 2, 4, 5, 6, and 8; the breech check aperture in FIGS. 1, 3, 5, 6, 7, and 9; the muzzle aperture in FIGS. 1, 3, 8, and 9; and the exemplary launcher device in FIG. 9 is included for the purpose of showing environmental structure and forms no part of the claimed design. 

CLAIM The ornamental design for a parabolic barrel, as shown and described. 